The d-electronic configuration of an octahedral CoII complex having magnetic moment of 3.95 BM is :
1
\(\rm t_{2 g}^{6} e_{g}^{1}\)
2
\(\rm t_{2 g}^{3} e_{g}^{0}\)
3
\(\mathrm{t}_{2 \mathrm{~g}}^{5} \mathrm{e}_{\mathrm{g}}^{2}\)
4
\(\mathrm{e}^{4} \mathrm{t}_{2}^{3}\)